Tides Today & Tomorrow in Rio Vista, CA

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in Rio Vista, CA.
Next low tide : 10:49 am (-0.4 ft)
Next high tide : in 4h 46m at 2:06 am (4.7 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waning Crescent (4% illuminated)
Tide Station Location : Station #9415316
Common Questions About Tides

Rio Vista, CA Tides - Jan 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri2:092.612:574.47:031.69:15-0.37:234:57Waxing Gibbous1Fri
2Sat3:032.71:334.47:531.79:57-0.47:234:58Full Moon2Sat
3Sun3:542.82:104.48:421.810:36-0.47:234:58Full Moon3Sun
4Mon4:402.92:474.39:301.911:12-0.37:234:59Full Moon4Mon
5Tue5:223.03:264.210:161.811:44-0.17:235:00Full Moon5Tue
6Wed6:013.14:074.011:011.87:235:01Waning Gibbous6Wed
7Thu6:363.24:513.812:130.011:47 AM1.77:235:02Waning Gibbous7Thu
8Fri7:103.35:373.612:390.212:351.77:235:03Waning Gibbous8Fri
9Sat7:423.36:283.31:050.41:301.77:235:04Waning Gibbous9Sat
10Sun8:123.47:302.91:330.62:351.67:235:05Third Quarter10Sun
11Mon8:423.58:542.62:050.83:491.57:235:06Third Quarter11Mon
12Tue9:133.710:262.42:431.05:051.37:225:07Third Quarter12Tue
13Wed9:493.811:472.43:271.36:141.07:225:08Third Quarter13Wed
14Thu10:324.04:141.57:150.67:225:09Waning Crescent14Thu
15Fri12:542.411:20 AM4.25:071.78:090.37:215:10Waning Crescent15Fri
16Sat1:522.512:114.46:071.88:570.07:215:11Waning Crescent16Sat
17Sun2:432.61:034.57:131.89:42-0.17:215:12New Moon17Sun
18Mon3:282.81:564.68:211.810:24-0.27:205:13New Moon18Mon
19Tue4:112.92:504.69:241.611:05-0.27:205:14New Moon19Tue
20Wed4:513.13:464.410:231.511:44-0.17:195:15Waxing Crescent20Wed
21Thu5:323.44:434.211:201.37:195:16Waxing Crescent21Thu
22Fri6:133.65:433.912:220.012:201.27:185:17Waxing Crescent22Fri
23Sat6:553.86:493.51:000.21:241.27:185:18Waxing Crescent23Sat
24Sun7:404.08:023.11:390.52:361.17:175:19First Quarter24Sun
25Mon8:274.19:212.82:210.83:521.07:175:21First Quarter25Mon
26Tue9:184.210:422.73:061.15:070.87:165:22First Quarter26Tue
27Wed10:104.311:572.73:571.36:160.57:155:23Waxing Gibbous27Wed
28Thu11:024.34:531.67:160.27:145:24Waxing Gibbous28Thu
29Fri1:012.811:52 AM4.35:521.78:070.07:145:25Waxing Gibbous29Fri
30Sat1:563.012:384.36:511.88:52-0.17:135:26Waxing Gibbous30Sat
31Sun2:443.11:224.37:461.99:32-0.17:125:27Full Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9415316)

Common Questions About Rio Vista, CA Tides

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What time does the tide turn (slack tide) in Rio Vista, CA today?

Slack tide in Rio Vista, CA is approximately 6:27 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Rio Vista, CA?

Rio Vista, CA is currently in a spring phase. Tonight's moon is 4% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Rio Vista, CA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Rio Vista, CA?

Tide predictions for Rio Vista, CA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Rio Vista, CA?

Tide data for Rio Vista, CA is sourced from NOAA Station #9415316. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9415316.

What is the moon phase in Rio Vista, CA tonight?

Tonight the moon over Rio Vista, CA is Waning Crescent (4% illuminated). This places Rio Vista, CA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA